Lathe-driver.



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No. 881,749. PATENTED MAR. 10, 1908.

' L. H. VOLD.

LATHB DRIVER.

APPLICATION FILED APR.4,1907.

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so' ease, and also to combine all the parts neces- UNITED STATES LARS H.VOLI), OF WESTVILLE, NEW `IERSEY,

ASSIGNOR TO WILLIAM SELLERS & COMPANY,

INCORPORATED, OF IHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYL-VANIA.

LATHE-DRIVER.

Specification of Letters Patent.

Application filed April 4, 1907.

Patented March 10, 1908.

Serial No. 366,381.

To all whom it may concer/n:

Be it known that I, LARs H. VOLD, a citizen of the United States,residing at Westville, county of Gloucester, and State of New Jersey,have invented a new and useful Improvement in Lathe-Drivers, of whichthe followin is a full, clear, and exact description, re erence beinghad to the accompanying drawings, which form a part of this specication.

The main object of my invention is to provide a means by which a wheelor a pair of wheels mounted on an axle centered between the centers of awheel lathe, can be effectively secured to the face plate or faceplates, and made to rotate against the resistance of a heavy cut appliedto the rim of the wheel insuch a manner that the gripping tendency ofthe driver upon the wheel adjusts itself automatically to thefresistanceof the cut.

It is a further object of my invention to avoid any special effort orhard labor on the part of the operator in the application of the driverto the wheel, such as would be required to handle and use heavy wrenchesor sledgc hammers.

It is a further object of my invention to provide a l'ixed o enpositionof the driver,

so that work can e placed and removed with sary for its functions in oneunit with no loose pieces to handle, and to thus avoid the risk oflosing or mislaying such pieces and consequent loss of time.

I will now describe a preferred embodiment of my invention.

In the drawings: Figure l is a plan View of the driver. Fig. 2 is asectional view through one of the drivers and the rim of the wheel 40that is to be held. F ig. 3 is a side elevation 4 of the driver in itsopen position ready to receive the work, also showing in section aportion of the wheel to be held. Fig. 4 is a front view of the driverand the bracket or '45 base that carries the driving arm.

4 is a. bracket bolted to one of the face plates of the lathe.

30 is a block loosely fitted into the bracket 4 between twoprojectingwings l1 and 110 to which the block is pivoted by means of abolt 5 extending through holes in the block and both wings.

nion 32 fitting in the block 3() between a shoulder 22 on the arm and acollar or nut 20 55 onthe trunnion. The arm 1 is curved to reach aroundthe rim of a wheel between the arms or spokes of the wheel and isprovided, at its outer end, with a set-screw 8, adjustable to and fromthe block 30. The axis of the trunnion 32 is perpendicular to the axisof rotation of the wheels to be turned.

The holes 12, in the wings 1l and 110,

l through which the bolt 5 passes, are elongated in a direction parallelto the axis of G5 rotation of the lathe spindle, giving to the block 30,with the pieces attached thereto, a A limited adjustment to and from therim of the wheel to be turned. The bolt 5 at one end is collared by itshead 19 against the out- 70 side of the wing 1l, and at the other end isprovided with a wedge 7 extendi through its body and bearing against thewlng 110 in such manner that, if desired, a clamping action can b'e setup between the bolt and the 75 two wings and block 30, by driving thewedge 7. Ordinarily, however, the fit of the block between the win s isa loose one to permit the block 30 to ave a free pivotal movement. 8O

9 is a socket piece or jaw fitted and secured to the block 30 andcarrying on its outer face two or more spuds or points l0 adapted to goagainst the rim of the wheel and embed themselves in the wheel fordriving purposes. The action ofthe driver, so far as described, is asfollows: After a wheel is put into place, the arm 1 and block 30 areswung, on the bolt 5, from the position shown in F ig. 3 into 90 theposition shown in Fig. 2, and the driver, by means of the set-screw 8,is clamped lightly to the rim or tire B between the set screw and thespuds 10; the arm, in this osition, being perpendicular to the plane othe wheel so that the projected distance between the point of the setscrew and thetrunnion 82 iS the true distance. Motion is then impartedto the driver-freni the face-plate to which it is secured. TvVhen a cutis applied to the rim of the wheel, the wheel will stop and the point ofthe set screw S pressing against the wheel will also stop, while thebracket Ll, block 30 and the trunnion end of the arm l, will advancewith the face-plate.

1 is an arm or lever provided with a trun- The arm l will thereforeassume an inclined position in the direction of the arrow, Fig. 1, andthe projected distance between the point of the set screw 8 and thetrunnion 32 will become less than the true distance, causing the spuds10, which offer the least surface for resisting the ressure, to embedthemselves in the rim of t e wheel. The inclination ofthe arm 1 willcontinue until the spuds have acquired suiiicient grip on the rim of thewheel to overcome the cut.

When the lathe is stopped, the strain on the spuds and the driver may berelieved by slacking the set screw 8. To remove the wheel, the drivingarm 1, with the block 30 is rotated on the 'pivot bolt 5, so that thefree end of the arm, with its set-screw 8, can pass easily beneath therim of the wheel and between the two adjacent spokes.

13 is a latch ivoted on the arm at 14 and adapted to hoo over aprojection or catch 15 on the inner face of the bracket 4 when the armis swung into the o en position shown in Fig. 3. A pin 16, iixe in theside wings 11 and 110 of bracket 4, and extending across the o en spacebetween the wings, aiiords a stop or a projection 17 on the block whenthe arm is swung into such open position. The bracket 4 is provided witha V-shaped socket 18 (best shown in Fig. 4) which corresponds with thelower edge of the arm at that point and forms a bearing for the arm inits lowest or open position. hus, when the arm is swung into the o enposition shown in Fig. 3, the latch 13 an rojection 15 form a stop forthe motion of t e arm in the direction of the arrow Fig. 3, and the stop16 and projection 17, with the socket 18 in the lower part of bracket 4,limit the motion of the arm in the direction of the arrow y, Fig. 3.Furthermore, the socket 18 and the trunnion 32, acting together, preventthe vibration of the arm around the trunnion 32. Thus the arm becomeslocked in its open position nomatter where the driver standsi n relationto the axis of rotation.

To clamp the driver to the wheel, the wheel is put into position asindicated in Fi 3, and the lathe 'is rotated until the driver that it isdesired to lock is in such position that the arm 1 will tend to swing bygravity into a horizontal position, that is, with the axis passingthrough 45 and 8 ina position extending erpendicular to the face plate.To permit t 's action to take place, the latch 13 is released b ressingon, or striking, the projecting end)7 oi) the latch lever and the arm 1allowed to turn on the bolt 5 as a center until the block 30 strikes thestops 21 projecting from the inner sides of the wings 11, 110, and thearm will be in the correct alinement forclamping, as hereinbeforedescribed.

In turning upon their circumference two locomotive driving wheelsmounted on their axle centered between the centers of a wheel lathe, alurality of these drivers, say two to each ace plate, would be employedfor clamping the wheels.

lt will be understood that the principal gripping face may be carried onthe free end of the arm 1 instead of on the block 30. It will also beunderstood that the s eciiic construction shown is one designed orapplication to a'wheel having spokes, which enables one of thecontracting parts to be inserted between the spokes and the grip appliedon opposite sides of the rim. My invention, however, is not limitedtothe specific construction and arrangement of parts shown, whether theconditions of use be the same as or different Jfrom the conditions towhich the specific construction and arrangement described areapplicable.

Having now fully described my invention, what I claim and desire toprotect by Letters Patent is:

1. A driver for work centered between the centers of a lathe, comprisinga sup ort Aadapted to be secured to the face-place o -the lathe, a partattached, and movable with relation to said support, and having agripping face arranged to abut against the wor y; and a clamping facepivotally mounted upon the gripping part and adapted to engage the workand partake of its movement and thereby actuate the gripping art toembed its gripping face into Athe wor 2. A driver for work centeredbetween the centers of a lathe comprising a stationary support adaptedto be secured to the faceplate of the lathe, a part attached to saidsupport adapted to contact with the face of the work and movable, toincrease its grip on the work, in a direction substantially parallel tothe axis of the lathe, and a second part, adapted to contact with theface of the work and movable in relation to said support, in a directionsubstantially opposite to the direction of rotation of said support, andconnections between the parts, adapted to be actuated by the work in itsresistance to rotation by which the said movement of the second partproduces the said movement of the irst part, and thereby causing theiirst part to embed its gripping face into the work until the grippingeffect is sufficient to overcome the resistance to rotation.

3. A driver .for work centered between the Acenters of a lathe,comprising two `parts adapted to engage the face of t e work, one parthaving a gripping face and movable, relatively tothe work, in adirection substantially parallel to the axis of the lathe, and the otherpart being movable, with respect to the iirst part, in a substaniallycircumferential direction in relation to the axis of rotation of thelathe, and connections between the parts actuated by the second part andadapted, during the rotation of the lathe, when the second part is movedrelaraftsman,

tively to the first part by partaking` of the relativeunovement of thework in the latters resistance to rotation, to so actuate thefirst-part, thereby embedding the gripping face ofthe first part intothe face of the work.

4. A driver for wheels mounted on an axle centered between the centersof' a wheel lathe, comprising two parts adapted to engage opposlte facesof a wheel rim, one part having a gripping face and movable, relativelyto the wheel, in a direction substantially parallel to the axis of thelathe, and the other part having a clamping face and movable, withrespect tothe irst part, in a substantially circumferential directionabout the axis of the lathe, and a connection between the parts adaptedto extend within the rim and between the spokes of the wheel andadapted, during the rotation of the lathe, to be yactuated by the secondpart and move the irst part as described, thereby embedding the grippingface of the iirst part into the wheel-face.

5. A driver for wheels mounted on an axle between the centers of a wheellathe, comprising a support adapted to b'e attached to the face plate ofthe lathe, a part having a gripping face and pivoted to said support, aclamping part adapted to engage the wheel face and partake of itsmovement, an arm carrying the clamping part and pivoted to the firstpart and adapted, when theclamping part is actuated by the wheel in thelatters resistance torotation, to move the iirst part toward the wheeland embed its gripping face into the wheel face.

6. A driver for wheels mounted'on an axle between the centers of a wheellathe, cornprising a support adapted for attachment to the face plate ofa lathe, a block provided with a grippin jaw adapted to engage one faceof a whee rim and pivotally mounted on said support to permit itsgripping .end to swing toward -and from the lathe axis, an arm pivotallmounted on said block on an axis perpen icular to the axis of rotationand adapted to extend within the rim and between the wheel spokes, and aclamping part on the free end of the arm adapted to engage the oppositeface of the wheel rim, thereby permitting the gripping jaw and clampinglpart to swing radially of the rim and allowin the arm to swing in adirection parallel to t e axis of rotation.

7. A driver for wheels mounted on an axle between the centers of a wheellathe, comprising a support adapted for attachment to the'face plate ofa lathe, a block provided with a grippin jaw adapted to engage one faceof a whee rim and pivotally mounted on said support to permit itsgripping end to swing toward and from the lathe axis, an arm pivotallylmounted on said block on an axis perpendicular to the axis of rotationand adapted to extend within the'rim and between the wheel spokes, aclamping part on the free end of the arm adapted to engage the oppositeface of the wheel rim, a projection on the support, a latch on the armengaging the projection when said arm is swung toward the axis ofrotation and holding the arm in its open position.

8. A driver for wheels mounted on an axle between the centers of a wheellathe, comprising a support adapted for attachment to the face plate ofa lathe, a block provided with a gripping jaw adapted to engage one faceof a wheel rim and pivotally mounted on said support to permit itsgripping end to swing toward and from thelathe axis, an arm pivotallymounted on said block on an axis perpendicular to'the axis ofrotationand adapted to extend within the rim and be# tween the wheel spokes, aclamping part on the free end of the arm adapted to engage the oppositeface of the wheel rim, and a stop on the support engagin said block andlimiting the movement of t e gripping jaw of the block toward the axisof rotation.

1 9. A driver for wheels mounted on an axle between the centers of awheel lathe, comprising a support adapted for attachment to thefaceplate of a lathe, a block provided with a grlpping jaw adapted toengage one face of a wheel rim and pivotally mounted on said support topermit its gripping en'd to swing toward and from the lathe axis, an armpivotally mounted on said block on an axis perpendicular to the axis ofrotation and eadapted to extend within the rim and between the wheelspokes, a clamping part on the free end ofthe arm adapted to engage theopposite face of the wheel rim, said support having a socket into whichsaid arm extends when said block and arm are swung toward the axis ofrotation, thereby limiting the movement of the arm toward the axis ofrotation and holding it from turning on its pivot in a directionparallel to the axis of rotation.

10. A driver for wheels mounted on an axle betweenthe centers of a wheellathe, comprising a support adapted for attachment to the face plate ofa lathe, a block provided with a'gripping jaw adapted to engage one faceof a wheel rim and pivotally' mounted on said support to permit itsgripping end to swing toward and from the lathe axis, an arm pivotallymounted on said block on an axis perpendicular to the axis of rotationand adapted to extend within the rim and between the wheel spokes, Vaclamping part on the free end of the arm adapted. to engage the oppositeface of the wheel rim, and a stop on the support engaging the block whensaid arm is moved into clamping position.,

11. A driver for wheels mounted on an axle between the centers of awheel lathe, comprising a support adapted for attachment to the faceplate of a lathe and having holes elongated in the direction of the axisof rotation, a bolt extending through said holes, a block, provided witha gripplng jaw, carried on said bolt, a swinging arm, a trunnionthereon, fitting in said block, whose axis is perpendicular to the axisof rotation of the wheel to be turned, and a clamping part on the freeend of the arm.

12. A driver for wheels mounted on an axle between the centers of aWheel lathe, comprising a support ada ted for attachment to the faceplate of a athe, and having holes elongated in the direction ofthe axisof rotation, a bolt extending through said holes, a block, provided witha gripping jaw, carried on said bolt, a swinving arm, a trunnionthereon, fitting in said block, Whose axis is perpendicular to the axisof rotation of the wheel to be turned, a clamping part on the free endof the arm adjustable toward and from the gripping jaw, stops on thesuport limiting the pivotal movement of the ock in opposite directionsrespectively, a pro- K. u A l jection .on the support, and a latch onthe arm adapted to engage the projection and hold the arm open.

13. A driver for wheels mounted on an axle between the centers of awheel lathe, comprising a support, wings thereon, a block carrying agripping jaw, iitted into the bracket between said wings, a headed boltextending between the Wings and carrying the block, there beingelongated holes through which the bolt passes, a wedge engaging one ofsaid wings and the end of the bolt opposite its head, an arm trunnionedon the block and adapted to extend between the s okes of the wheel, andan adjustable c amping part on the free end of the arm.

In testimony of which invention, I have hereunto set my hand, atPhiladelphia, on this first day of April, 1907.

` LARS H. VOLD.

Witnesses:

MARY I. BRADLEY, HELEN FAHNEsTooK.

